2001 USAMO Problems/Problem 4
From AoPSWiki
Problem
Let 
be a point in the plane of triangle 
such that the segments 
, 
, and 
are the sides of an obtuse triangle. Assume that in this triangle the obtuse angle opposes the side congruent to . Prove that 
is acute.
Solution
This problem needs a solution. If you have a solution for it, please help us out by adding it.
See also
| 2001 USAMO (Problems • Resources: AoPS | ML) | ||
| Preceded by Problem 3 | 1 • 2 • 3 • 4 • 5 • 6 | Followed by Problem 5 |
